STUDIES IN THE AMERICAN BUPRESTID^ 67 



the most part coarsely, closely and confusedly rugose, finely punctate 

 along the eyes, only slightly concave anteriorly, the eyes nearly as in 

 compactus but slightly more prominent, the antennas nearly similar 

 (d^); prothorax much narrower, not quite one-half wider than long, 

 otherwise similar, only moderately narrowed anteriorly, with the apex 

 but very feebly arcuate medially, the basal angles only feebly sub- 

 everted, the scutellar sinus feeble; surface similar but more coarsely 

 as well as more sparsely punctured medially; elytra not quite twice as 

 long as wide, evidently wider than the prothorax, the posterior ob- 

 liquity slighter and more gradually formed, the surface sculpture almost 

 similar but becoming more rugose laterally; under surface polished, 

 brighter coppery-red, the fine punctures nowhere dense; prostemum 

 with the very coarse perforations widely and irregularly spaced along 

 the middle. Length 15.0 mm.; width 5.6 mm. New Mexico. 



cylindrinus n. sp. 



16 — Form very narrowly suboval, moderately convex, shining, bright bronze 

 above, feebly cuprascent beneath, the pubescence very short, sparse 

 and inconspicuous, not vittate on the elytra; head punctate and also 

 with flattened and confused smooth spaces, only feebly concave ante- 

 riorly; eyes and antennas nearly as in compactus; prothorax scarcely 

 more than one-half wider than long, the sides subparallel, feebly arcu- 

 ate medially, rather abruptly and subsinuately convergent near the 

 apex, the basal angles not at all everted; surface coarsely, confluently 

 punctate laterally, finely and sparsely so and basally depressed medially 

 and with two divaricately oblique impressions from the middle of the 

 base; scutellum very small; elytra uniformly convex and sparsely 

 punctate and rugulose throughout, the striae fine, distinct but not im- 

 pressed suturally, a submarginal costule evident for a short distance 

 near the middle; under surface not finely, rather sparsely and subrugu- 

 losely punctate laterally; anterior tibiae (cJ*) feebly arcuate, scarcely 

 serrate, the middle tibiae almost straight. Length 9.2 mm.; width 

 3.0 mm. Southeastern Arizona debilis n. sp. 



Form more elongate and subcuneiform, shining, deep coppery- red ; head and 

 antennas ( cJ') nearly as in debilis; prothorax rather less than one-half 

 wider than long, the sides broadly rounded, very gradually converging 

 anteriorly to the apex, which is very slightly narrower than the base, 

 feebly prominent medially, the basal angles very slightly everted, acute, 

 the scutellar sinus unusually deep and distinct; surface broadly de- 

 pressed basally but not bi-impressed, coarsely, confluently punctate 

 laterally, very sparsely medially; elytra more elongate, much more 

 than twice as long as wide, evenly convex, finely, very sparsely punc- 

 tured and sparsely rugulose throughout, the striation barely evident 

 even suturally; under surface not densely, subrugulosely punctured 

 laterally; anterior tibiae (c5^) distinctly arcuate and remotely serrulate 

 within, the middle tibiae also arcuate though more feebly, but serrulate 

 within, only near the tip; posterior tibiae nearly straight. Length 

 ii.o mm.; width 3.5 mm. Southeastern Arizona, — G. W. Dunn. 



tenuis n. sp. 



